"As long as the body is there it is subjected to the influence of climatic changes, disease and natural disturbances, the threefold miseries of material existence. We cannot avoid them. Sometimes we receive letters from neophyte devotees questioning why they have fallen sick, although pursuing Kṛṣṇa consciousness. They should learn from this verse that they have to become tolerant (dvandva-titikṣayā). This is the world of duality. One should not think that because he has fallen sick he has fallen from Kṛṣṇa consciousness. Kṛṣṇa consciousness can continue without impediment from any material opposition. Lord Śrī Kṛṣṇa therefore advises in Bhagavad-gītā (2.14), tāṁs titikṣasva bhārata: 'My dear Arjuna, please try to tolerate all these disturbances. Be fixed in your Kṛṣṇa conscious activities.'"
(Śrīmad-Bhāgavatam 4.22.24, Purport)
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